Grease-cup.



J. S. DEWEY.

GREASE CUP.

APPLICATKON FILED JAN-22. 1915.

1,159,833. Patented Nov. 9, 1915. I

hfi tnesses: J Ins/32hr: 6556 ewe srns PATENT Enron;

JESSE S. DEWEY, OF EAST CHICAGO, INDIANA, ASSIGNOR TO GREEN ENGINEERING COMPANY, OF EAST CHICAGO, INDIANA, A CORPORATION OF ILLINOIS.

GREASE-CUP.

Application filed January 22, 1915.

To all whom it may concern:

Be it known that I, Jnssn S. DEWEY, a citizen of the United States, and a resident of East Chicago, in the county of Lake and State of Indiana, have invented certain new and useful Improvements in Grease-Cups; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, and to the characters of ref erence marked thereon, which form a part of this specification.

This invention relates to improvements in grease cups of the form comprising a cup or container adapted to retain therein a quantity of lubricant known as grease or hard oil, and a base member supporting said cup through the mediumof a screw thread formed on said cup and base member, the latter being provided with an outlet through which the grease is supplied to the parts to be lubricated by the screwing down of the cup.

In the construction of grease cups of the form above described, it becomes necessary from time to time to unscrew and detach the cup from the basemember in order to replenish the supply of grease, and when filled, to be replaced by first bringing the corresponding screw threads of the cup and base member into proper engaging or registering position before the cup can be screwed down. It is common knowledge to those familiar with the manipulation of grease cups that this operation of registering the screw threads is often attended with uncertainty, unnecessary trouble and aggravating loss of time.

The main object of my invention is to provide a means for guiding the cup and base member into position, so that the screw threads will register properly and the cup may, therefore, be easily and quickly applied to the base member.

The further objects of myinvention will appear from the following description, reference being had to the accompanying drawings, in which,

Figure 1 is a vertical cross-sectional view of one form of grease cup embodying the features of my invention. Fig. 2 is a crosssectional view taken on line 2-2 of Fig. 1; Fig. 3 is a vertical cross-sectional view of a Specification of Letters Patent.

cap member.

Serial No. 3,758.

modified form of cup member, as may be made in accordance with my invention; Fig. 4 is a cross-sectional view taken on line Hof Fig. 3.

The drawings show a grease cup, comprising a hollow cap-member A, having cylindrical side walls A and closed at the top by the wall A The inner annular surface manner to support the same and to permit relative movement of said cap andbase members by the rotation of said cap mem ber. Base member B is also provided with a downwardly extending, integral shank D having a screw threaded extremity thereby permitting the grease cup to be supported Patented Nov. 9, 1915.

upon a fixed portion of an engine or other i mechanism and adjacent to the parts thereof to be lubricated. A centrally disposed,

vertical passage E extends through the base member and communicates with the parts to which the lubricant is to be supplied.

Referring now more particularly to my novel improvement, to the form of grease cup above described, I provide a centrally disposed, vertical stem, or guide-member F (Figs. 1 and 2), rigidly attached in a suitable manner to the top wall A and extending downwardly in axial relation to and beyond the margin of the side wall A of said cap-member; A desirable means of attaching stem F to the cap-member is illustrated in F ig. 1, in which the upper-end of the stem F is screwed into the top wall A of the It is understood, however, that any similar attachment may be employed, or the stemmay be made integral with said cap-member A, p as will hereinafter be described in connection with the description of the modified form of my device illustrated in Figs. 3 and 4.

sliding movement therein. The walls of passage E thus form a bearlng for the guldestem so as to hold said stem in verticalrelation to the base-member, for the purpose which. will hereinafter appear.

To facilitate the insertion of stem F in passage E, the upper surface of the base member B is preferably concave or depressed and sloping toward the opening of the passage E. The provision of this de pressed surface serves to guide the end of stem F to the passage. As a further provision, the circular edge at the lower end of the stem F may be slightly chamfered,

'ner. vertical position over thebase-member with as indicated at f, so that the stem can be .slipped into the passage with ease and despatch.

As a means for discharging the grease from the cup, there is provided a central discharge passage G in the stem F. Said passage G opens through the lower end'of said guide stem F into said passage E. The passage G terminates short of the upper end of said guide-stem and opens into the interior space of the cap-member A by means of a transverse port or openingg provided in said guide-stem. (See Figs. 1 and 2.) The opening 9 in said stem serves to conduct the lubricant from the cap-member A into the passage G of said stem, and is preferably located adjacent to the upper end of said stem, so that said passage will not be cut off from communication with the interior of the cap when said cap member is screwed down to its greatest extent and in -w-hich position the greater portion of the stem F enters and is confined within the passage E of the base member B.

in accordance with my improvement is as follows: The cap-member, detached from the base-member, is filled with grease or hard oil in the usual and well known man- Said cap-member is then brought into the guide-stem F extending downward and in a position to be inserted into said passage E. The stem F extends downwardly beyond the side walls of the cap-member, and is inserted into said passage E before the threads of said base and cap members become engaged. Since the axis of said stem F an'dpassage are coincident with the axis of rotation of the cap A, said cap-member is brought into vertical relation with the baseappear, is designed to fulfil the same funcmember and is held from tilting after a portion of the stem enters the opening E. As a result, the lower edge of-the cap-member approaches the threaded periphery of the base-member in parallel relation thereto, so that threads aand Z) are easily and quickly brought into proper registering position and will engage with each other immediately by rotating the cap-member in the usual operation of screwing the same. After the threads are engaged inthe manner above described, the grease contained in the cup has only one outlet, viz., discharge passage G, and as the cup is screwed down the grease is ejected through said passage and the lower portion of opening E, and'directed by means of other suitable passages communicating therewith to the part desired to be lubricated. The modified form of stem shown in Figs. 3 and 4: obviously act in the same manner, the slot or passage J, forming with the side wall of the passage E, an outlet for the lubricant.

The principal advantage derived from a grease cup constructed in accordance'with the herein described improvements is the great saving in time and trouble, both in I the operation of applying the cup to the base member of a grease cup, and in the operation of refilling the cap. It maybe pointed out in this connection that the 'difliculty heretofore encountered in the opera tion of engaging thecorresponding threads of a grease cup are more than would be ordinarily experienced'in engaging any two screw threads, because of the presence of the grease which is used to fill the cap-memthus the inconvenience and ordinary trouble experienced in applying the caps tothe base member of grease cups 1s obviated.

Further advantage derived from my device is its simplicity, cheapness of construc. tion, and durability. Since the threads are not subject to jamming when improperly engaged,the threads do not become stripped or damaged, and consequently wear longer than do the threads in the ordinary form of grease cup.

further advantage of improved b er. Ifthe cup is filled too full, the surplus form of grease-cup is that it may be easily 1 incorporated in the ordinary form of greasecup with a minimumamount of work and expense. The only additional part necessary is the guide-stem, which may be screwed or otherwise attached tothe cup.

Still another advantage in the construction herein described is that the discharge passage, being in the removableir ember, can

be easily cleaned when desired, Without removing the entire grease-cup from its posi tion.

I claim as my invention 1. A grease cup, comprising a base member and a cap member having side Walls adapted to rotatively engage said base member When said members are connected together, a guide-stem secured to and projecting from said cap member and adapted to have both sliding and rotative engagement With said base member, and said grease cup being provided With a discharge passage. 7

2. A grease cup, comprising a base membeer, and a cap member having side Walls provided with internal screw threads adapted to engage external screw threads on said base-member, and a centrally disposed guide-stem secured to and projecting from said cap member, said base-member being provided With a centrally located opening extending therethrough, and adapted to receive said guide-stem in endWise sliding engagement; said guide-stem being provided with a longitudinally-extending discharge passage.

In testimony, that I, JEssE S. DEWEY, claim the foregoing as my invention and aflix my signature in the presence of two witnesses this 16th day of J anuary 1915.7

JESSE S. DEWEY. l/Vitnesses:

' F A. KrsER,

N. K. CoRBE'rT.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, washington D. C. 

